| Project/Area Number |
14350067
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
機械工作・生産工学
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
KUNIEDA Masanori Tokyo University of Agriculture and Technology, Faculty of Technology, Professor, 工学部, 教授 (90178012)
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| Co-Investigator(Kenkyū-buntansha) |
YOSHIDA Masahiro Tokyo Metropolitan College of Aeronautical Engineering, Department of Mechanical Engineering, Associate Professor, 助教授 (80220680)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 2003: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2002: ¥4,400,000 (Direct Cost: ¥4,400,000)
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| Keywords | Wire electrical discharge machining / Simulation of machining accuracy / Wire electrode vibration / Process reaction force / Discharge delay time / Material removal rate / Pattern searching method / Discharge location |
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| Research Abstract |
In this research, we developed a WEDM (Wire Electrical Discharge Machining) simulation method which can reproduce the discharge phenomena of WEDM on computer accurately. The simulation process consists of searching for discharge locations, removing the workpiece and analyzing wire vibration. Since unclarified parameters such as ignition delay time, explosive force, damping coefficient, and permittivity of dielectric in simulation are difficult to measure from experiments, they were obtained by solving the reverse problem using parametric programming. With the parametric programming method, optimum parameters for simulation were searched simultaneously to minimize differences between simulation results and experimental results.
In order to evaluate the simulation accuracy, simulation of finish cutting was performed using the parameters identified. It was found that high precision simulation of finish cutting can be realized with the simulation error less than 1.5μm.
or the next step, simulation program for rough cutting was developed. Shapes of straight grooves and right angled grooves were cut, and then simulation results were compared with the experimental results. Changes in the straightness of both frontal and lateral surfaces of the grooves and the width of the grooves were investigated by increasing the feed rate and wire electrode tension. The results of simulation coincided qualitatively with the experimental results.
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